Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L59/00—Thermal insulation in general
  • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
  • F16L59/026—Mattresses, mats, blankets or the like
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
  • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S428/00—Stock material or miscellaneous articles
  • Y10S428/906—Roll or coil
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
  • Y10T442/3707—Woven fabric including a nonwoven fabric layer other than paper
  • Y10T442/3724—Needled
  • Y10T442/3764—Coated, impregnated, or autogenously bonded
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/40—Knit fabric [i.e., knit strand or strip material]
  • Y10T442/494—Including a nonwoven fabric layer other than paper
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
  • Y10T442/637—Including strand or fiber material which is a monofilament composed of two or more polymeric materials in physically distinct relationship [e.g., sheath-core, side-by-side, islands-in-sea, fibrils-in-matrix, etc.] or composed of physical blend of chemically different polymeric materials or a physical blend of a polymeric material and a filler material
  • Y10T442/641—Sheath-core multicomponent strand or fiber material
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
  • Y10T442/659—Including an additional nonwoven fabric
  • Y10T442/66—Additional nonwoven fabric is a spun-bonded fabric
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
  • Y10T442/674—Nonwoven fabric with a preformed polymeric film or sheet
  • Y10T442/675—Ester condensation polymer sheet or film [e.g., polyethylene terephthalate, etc.]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
  • Y10T442/69—Autogenously bonded nonwoven fabric
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
  • Y10T442/696—Including strand or fiber material which is stated to have specific attributes [e.g., heat or fire resistance, chemical or solvent resistance, high absorption for aqueous compositions, water solubility, heat shrinkability, etc.]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
  • Y10T442/697—Containing at least two chemically different strand or fiber materials

Definitions

• a thermal insulation material which consists of fully synthetic fibers consists. This insulation is rollable, meets the requirements of Building material class B1 according to DIN 4102, part 1, and has one according to DIN 4108, Part 1, determined thermal conductivity of less than 0.04 W / m * K and is considered Single material system recyclable.
• Rollable thermal insulation materials based on mineral fibers e.g. B. Rock wool and binders based on phenolic resins are known.
• B. Rock wool and binders based on phenolic resins are known.
• thermal insulation materials that are natural on fibers Build origin, such as B. cellulosic fibers or wool.
• B. cellulosic fibers or wool are natural on fibers Build origin.
• Additions to favorably influence the fire behavior are necessary.
• German Offenlegungsschrift 1 938 930 describes a method for producing insulating mats from waste consisting of synthetic fibers.
• the stages of fleece formation and thermal consolidation are described using a thermoplastic binder.
• the use of fiber waste in the form of polyester, polyamide and a mixture thereof is particularly advantageous.
• Polyamide in fiber form and powdered thermoplastic binders such as polyethylene and phenolic resins are recommended as binders.
• the document does not contain any references to a thermal conductivity of less than 0.04 W / m * K corresponding to DIN 4108, part 1 coupled with a fire behavior corresponding to building material class B1 (DIN 4102, part 1).
• the German utility model G 88 07 017.4 describes an upholstered part a fleece-containing padding that consists exclusively of one voluminous nonwoven fabric, this nonwoven fabric binding fibers, especially core sheath fibers. Furthermore, this binding fiber nonwoven is press-formed so that it has a relief at least in some areas. Here it is about the combination of a normal fiber, for example based of polyester, and a binding fiber, for example polyester in the core, coated with copolyester.
• the task is to provide an upholstered part that a structure through the process of non-homogeneous press molding is given.
• European patent application 0 469 309 describes a fiber structure the base of polyester, polyamide or polyolefin fibers, which are essentially consists of a polyester or polyolefin fiber, and another component contains.
• This additional component can optionally be a Trade multi-component fiber that has an identical composition as the first fiber, or alternatively a thermoplastic polymer powder.
• a method for producing mats from these is described Fiber structures. These mats are then the starting product for molded parts in the Vehicle construction. Take over the multi-component fiber or the polymer powder the task of connecting the fibers of the first component and to bring about the desired rigidity.
• EP-0 585 626 A1 describes a laminated mineral fiber mat which is laminated on one or both sides with a lamination made of a synthetic fiber nonwoven.
• the synthetic fiber fleece has a basis weight of 10-100 g / m 2 and is made of polyester backing and polyester binders.
• the laminated mineral fiber mat described there is not recyclable like the rollable thermal insulation according to the invention. There are no indications in this document that polyester fleeces have recyclable thermal insulation with a thermal conductivity of ⁇ 0.04 W / m * K.
• EP-O 364 194 A2 insulating materials consist of Continuous threads of a synthetic material are made.
• the synthetic Material can also be polyester.
• the thermal conductivity can also be less than 0.04 W / m * K. Notes, a thermal insulation material based on carrier and To produce binding fibers that are recyclable and that are made from carrier and binding fibers contains a substance class, this European patent application is not allowed remove.
• thermal conductivity of less than 0.04 W / m * K determined according to DIN 4108, part 1, coupled with a building material class B1 (DIN 4102, part 1) has appropriate fire behavior and also from one One-component system consists of fully synthetic fiber material, so that it is recyclable.
• the invention relates to a rollable insulation made of synthetic Fiber material which has a thermal conductivity of 0.04 W / m * K maximum determined according to DIN 4108, part 1 and one according to building material class B1 appropriate fire behavior determined in accordance with DIN 4102, Part 1, in which the rollable Thermal insulation as a single material system is recyclable and the fully synthetic fiber material made from and binding fibers from a class of substances, namely polyester, preferably from Polyethylene terephthalate is built up, the binding fibers at least in parts the surface consist of a polyester with a melting point below the melting point of the carrier fibers.
• Binding fibers made of polyester, preferably made of polyethylene terephthalate, wherein the binding fibers at least on parts of the surface made of a polyester exist with a melting point below the melting point of Carrier fibers lies.
• melt-spinnable polyesters are suitable as carrier fibers.
• Such polyesters consist predominantly of building blocks which are derived from aromatic dicarboxylic acids and from aliphatic diols.
• Common aromatic dicarboxylic acid building blocks are the divalent residues of benzenedicarboxylic acids, especially terephthalic acid and isophthalic acid;
• Common diols have 2 to 4 carbon atoms, with the ethylene glycol being particularly suitable.
• Melt-spinnable polyester materials which consist of at least 85 mol% of polyethylene terephthalate, are particularly advantageous.
• dicarboxylic acid units and glycol units which act as so-called modifying agents and which allow the person skilled in the art to specifically influence the physical and chemical properties of the filaments produced.
• dicarboxylic acid units are residues of isophthalic acid or of aliphatic dicarboxylic acid such as, for example, glutaric acid, adipic acid, sebacic acid;
• diol residues with a modifying action are those of longer-chain diols, for example of propanediol or butanediol, of di- or triethylene glycol or, if present in small amounts, of polyglycol with a molecular weight of approximately 500 to 2000.
• Polyesters which are at least 95 are particularly preferred Mol% contain polyethylene terephthalate, especially those made from unmodified PET.
• the carrier fibers can be in the form of staple fibers, the staple length being able to scatter over a wide range.
• so-called recycling fibers ie staple fibers which are produced from fiber remnants by means of a combined cutting and tearing process.
• Another way of making such fibers accessible is to melt residues from the processing and processing of synthetic fibers that are of the same type in a known manner, to filter and degas the melt, if necessary, and to granulate the product again.
• the fibers spun from such a granulate may no longer be qualitatively comparable with the original starting product, but meet the requirements set here. In a known manner, the formation of the granules can be avoided by spinning directly from the melt.
• the polyesters used have a molecular weight corresponding to one intrinsic viscosity (IV) measured in a solution of 1 g polymer in 100 ml dichloroacetic acid at 25 ° C, from 0.6 to 1.4.
• Suitable binder fibers are all melt-spinnable polymer materials whose melting or softening temperature is below the melting or softening temperature of the carrier fibers, provided they are fibers of the same substance class.
• the binder fibers are preferably melt-spinnable polyesters whose melting or softening temperature is modified or additives, compared to the melting or softening temperature of the carrier fiber, which also consists of melt-spinnable polyester.
• the binder fibers can also be in the form of so-called core sheath fibers, ie in the case of polyester or polyethylene terephthalate the outer region can be reduced in melting point, for example by modification with isophthalic acid.
• all constructions - as is usual with bicomponent fibers - are conceivable.
• the binder fibers can also contain a flame-retardant additive to improve fire protection behavior.
• the binder and carrier fibers belong to the same class of substances.
• the binder fibers are in the form of staple fibers, with the staple length being able to scatter over a wide range.
• so-called recycling fibers ie staple fibers which are produced from fiber remnants by means of a combined cutting and tearing process.
• Another way of making such fibers accessible is to melt residues from the processing and processing of synthetic fibers that are of the same type in a known manner, to filter and degas the melt, if necessary, and to granulate the product again.
• the fibers spun from such a granulate may no longer be qualitatively comparable with the original starting product, but meet the requirements set here. In a known manner, the formation of the granules can be avoided by spinning directly from the melt.
• the proportion of binder fibers - based on carrier fibers - is up to 50% by weight, preferably 30 to 50% by weight. If the binder fiber as Bicomponent fiber, e.g. as core-sheath fiber, the proportion is 15 to 60% by weight, preferably 30 to 60% by weight.
• the thermal insulation according to the invention preferably consists of a the above described carrier and binder fibers.
• the underlying nonwoven is thermally consolidated Hot air.
• the temperature of the hot air blown through the fleece lies here above the melting point, at least above the softening range, the low-melting component (binding fiber).
• the thickness of the thermal insulation according to the invention is between 30 and 200 mm, preferably between 80 and 160 mm.
• the weight per unit area is between 400 and 3000 g / m 2 , preferably 1000 to 3000 g / m2.
• the density is between 15 and 50 kg / m 3 , preferably between 20 and 30 kg / m 3 .
• the thermal insulation according to the invention consists of carrier and binding fibers, which belong to a substance class. This is an essential contribution performed on the ability to recycle.
• the fully synthetic carrier and binding fibers do not need any additives against mold and against eating damage.
• one-sided or both-sided surface compaction of the thermal insulation is possible, for example by lamination.
• This lamination is a woven, knitted, laid, knitted, nonwoven, spunbonded or a film of the same substance class from which the carrier and binding fibers are made, so that the uniformity of the material and the recyclability are retained.
• the lamination is attached by means of the existing or additional binding fiber of the same substance class, the additional binding fibers having a reduced melting point. If necessary, the lamination can also be attached by a needle process or in addition to the above-described binding fiber attachment.
• the lamination is preferably carried out in the same process step in which the rollable thermal insulation is consolidated.
• the carrier and binding fibers used according to process step a) are deposited on the conveyor belt by means of suitable fleece formation measures, the use of the binder in the form of a fiber, not in the form of a Powder, leads to a process-related settling or any Separation of both components is prevented.
• the amount of binder, here as Bind fiber used can be minimized. Usually this will be the more expensive of the two components. This way it becomes a cheaper one Influence on the cost of rollable insulation achieved. After that The end product here is rollable thermal insulation, are the requirements with regard to textile technology data on the fiber types to be used accordingly low. This also means a favorable influence on the Costs. Only an economical formation of fleece has to be made possible.
• so-called recycled fibers are suitable as load-bearing fibers to use, as for example the company Polywert from conventional Remains of fibers are produced using a combined cutting and tearing process.
• the wide stack length distribution with a small proportion of extremely short ones Fibers and an excess length portion is not a problem here.
• a bicomponent fiber can be special low demands are made.
• with one Recycled fiber based on leftovers can be worked, as above described.
• the thermal treatment according to process step b) is carried out using hot air, the temperature of which is chosen so that softening or on or Melting of the binding fiber is made possible. The exact temperature depends thus on the binder used. With the hot air treatment along with this, a compaction of the fleece can be observed and also wanted. The degree of compaction is different from the one chosen Hot air speed, the weight of the fleece and the distance of the Hot air nozzle depending on the surface of the fleece. Simultaneously with the Thermal lamination can also be done by lamination.
• the thermal insulation material described here based on fully synthetic Fiber material is recyclable, because according to the invention both components and belong to the same class of substances.
• the above product can be melted and in a suitable form again Granules are transferred. This granulate becomes a fiber again the above product is spun out or bypassing the granulate stage melted again.
• the melting point of a substance class is based on a Melting point reduction to be expected, so that the fiber thus obtained as a binding or Adhesive fiber can be used in the same process.
• the favorable properties of rollable thermal insulation can be demonstrated in this way based on fully synthetic fiber material, based on a Substance class, fully combine with particularly inexpensive production and Circulatory ability.
• Thermal insulation shows fire behavior according to building material class B1 (according to DIN 4102, part 1). In addition, it has a thermal conductivity of less 0.04 W / m * K determined according to DIN 4108, part 1.
• the starting materials are Polywert fiber type B and Polywert fiber type C Polywert company. These two fibers are defined as follows: Both are Polyester fibers. Polywert fiber type B consists of 100% fibers based of polyethylene terephthalate. Remains of different types of fibers were over one Tearing process aligned with each other in terms of opening and stack length and so that Product Polywert fiber type B obtained. The jacket of Polywert fiber type C forms a polyester with a reduced melting point. The softening range of the Mantels is in the range around 115 ° C - 125 ° C. Also here were leftovers over two Tearing drum homogenized with regard to stack length and presentation and so that Product Polywert fiber type C obtained.
• Both fiber qualities are presented in a ratio of 70:30 Polywert fiber type B to Polywert fiber type C on a card and deposited as a fleece.
• the basis weight is 1,600 g / m 2 , the raw thickness is approx. 80 mm.
• the fleece passes through a hot air passage.
• the funding is provided by a conveyor belt below. Hot air is supplied from above. The temperature of the air is 150 ° C, the thickness of the insulating material after cooling is 60 mm. Thickness reduction and compression take place through the air speed, the dead weight and the distance between the hot air nozzles on top and the conveyor belt below.
• the cooled product is particularly homogeneous. It is rollable. It has an internal cohesion that enables processing comparable to that of conventional rollable, fibrous thermal insulation materials.
• the thermal conductivity according to DIN 4108, part 1 is in the range 0.035-0.04 W / m * K.
• the product thus corresponds to the heat conduction group WLG 040.
• the fire behavior corresponds to that of building material class B1 (according to DIN 4102, part 1).
• the density is 27 kg / m 3 .
• polyvalent fiber type B and polyvalent fiber Type C can be varied in a wide range, e.g. in the range of 15-40 % of Polywert fiber type C. After the type C is in the Typically more expensive type, it is recommended to minimize this proportion prefer the range of 15-30%.
• binding fiber e.g. Core sheath fiber
• the proportion of this fiber can be further reduced to up to 10%.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Nonwoven Fabrics (AREA)
• Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
• Building Environments (AREA)
• Multicomponent Fibers (AREA)
• Thermal Insulation (AREA)
• Laminated Bodies (AREA)

Applications Claiming Priority (2)

Publications (3)

Family

ID=7758866

Family Applications (1)

Country Status (8)

Cited By (1)

Families Citing this family (27)

Family Cites Families (17)

• 1995
  • 1995-04-05 DE DE19512767A patent/DE19512767C2/de not_active Expired - Fee Related
• 1996
  • 1996-03-22 DK DK96104599T patent/DK0736723T3/da active
  • 1996-03-22 DE DE59602463T patent/DE59602463D1/de not_active Expired - Fee Related
  • 1996-03-22 EP EP96104599A patent/EP0736723B1/de not_active Expired - Lifetime
  • 1996-03-22 AT AT96104599T patent/ATE182395T1/de not_active IP Right Cessation
  • 1996-04-03 US US08/626,825 patent/US5723209A/en not_active Expired - Fee Related
  • 1996-04-03 NO NO961375A patent/NO961375L/no not_active Application Discontinuation
  • 1996-04-04 JP JP8082190A patent/JPH0926084A/ja active Pending
  • 1996-04-05 SI SI9600114A patent/SI9600114A/sl unknown

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